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Drilling Techniques in Modern Mining Industry

Drilling contractors for mining industry has undergone considerable changes throughout the history. Here are some arguments to support this idea: the first wells in the history of humanity are likely to have been made for the extraction of water from the aquifers. In general, according to the researchers, the drilling process has been known in antiquity. It has been proved by means of science that the Egyptians used drilling during the construction of the pyramids and Chinese people received salt with the help of drilling. In ancient Rome, the drilling been used for various industrial purposes. Now, there is a huge step forward in science, and incredible changes have been introduces to improve the quality of the process of drilling.

In the modern world, there are a great amount of integrated onshore and offshore drilling contractors. They provide high-efficiency drilling services around the world. Mining drilling rigs are used for two main goals. They are exploration drilling aimed at finding out the location and quality of a mineral, and production drilling, used in the production-cycle for mining.

Mining drilling contractors such as Bostech drilling methods have dramatically transformed over years, with technological advances improving efficiency and the safety and health of people. The most widespread techniques of drilling in modern mining industry include:

*Air core drilling is the method of rotary drilling, by which air is used for circulation and rotation. This removal of the destroyed rock borehole as effective or even more effective than the conventional methods using water or drilling slurry; moreover, when the air is greatly increased drilling rate of penetration. The ventilation principle provides a considerable method of effectiveness, and numerous reviews prove it.

Benefits: This method of drilling is widely used to drill the hard depths. Air core drilling can achieve depths approaching 300 meters under favourable conditions.

*Percussion rotary air blast drilling (RAB) is used mostly in the mineral exploration industry. The leading instrument here is pneumatic reciprocating piston-driven “hammer” to energetically drive a heavy drill bit into the rock. There is one peculiarity here to be noticed: the drill bit is hollow, solid steel and has20 mm thick tungsten rods protruding from the steel matrix as “buttons”.

Benefits: RAB drilling is used primarily for mineral exploration water bore drilling and blast-hole drilling in mines. It can be applied in engineering as well.

*Reverse Circulation Drilling System (RCD) is the method by which compressed air is injected into the drill pipe below water level. This is made to diminish the density of the internal water column and start the circulation process. The mixture of water, air and cuttings is then flushed out through the drill pipe into setting tanks.

Benefits: RCD rigs are highly efficient, secure, and harmless for nature and its resources. They are a great solution for drilling large diameters and depths in hard rock.

*Slim line is a relatively modern and fashionable drilling technique. The system of pipes specializes in unconsolidated formations utilizing a disposable inner tube that houses the core. This pneumatically operated drill machine is specifically designed for drilling precise lead holes for cutting.

Benefits. Ergonomically placed portable control unit with pressure regulators give greater control to the operator, it can be setup easily during both vertical and horizontal drilling. Lightweight machines can be used at the most inaccessible locations.

Drilling processes are an integral part in all sectors of the economy, ranging from municipal areas where, for example, it is impossible to imagine today, laying communications without setting Horizontal Directional Drilling – HDD, to the drilling of this essential component of all stages of field development. Find more about Visit www.bostech.com.au